Mergers and Acquisitions - Purchase Price Allocation (Details) - USD ($) $ in Millions	Sep. 30, 2022	May 02, 2022	Dec. 31, 2021	Sep. 07, 2021
Assets acquired
Goodwill	$ 719.0		$ 646.3
Cincinnati Bell Inc. [Member]
Assets acquired
Cash				$ 11.2
Receivables				318.5
Inventory, materials and supplies				56.4
Prepaid expenses				5.6
Other current assets				40.5
Property, plant and equipment				1,950.8
Operating lease right-of-use assets				42.3
Goodwill				651.0
Intangible assets				969.6
Deferred tax assets				6.9
Other noncurrent assets				20.2
Total assets acquired				4,073.0
Liabilities assumed
Current portion of long-term debt				11.8
Accounts payable				381.1
Unearned revenue and customer deposits				51.2
Accrued taxes				24.6
Accrued interest				19.4
Accrued payroll and benefits				49.3
Other current liabilities				75.0
Long-term debt, less current portion				1,378.0
Operating lease liabilities				38.6
Pension and postretirement benefit obligations				151.6
Pole license agreement obligation				46.7
Deferred income tax liability				153.6
Other noncurrent liabilities				71.4
Total liabilities assumed				2,452.3
Net assets acquired				$ 1,620.7
Agile IWG Holdings, LLC [Member]
Assets acquired
Receivables and other current assets		$ 1.5
Property, plant and equipment		10.2
Operating lease right-of-use assets		27.8
Goodwill		35.3
Intangible assets		19.4
Total assets acquired		94.2
Liabilities assumed
Accrued expenses and other current liabilities		2.5
Operating lease liabilities		25.7
Other noncurrent liabilities		0.5
Total liabilities assumed		28.7
Net assets acquired		$ 65.5